ISL6721A

Flexible Single-ended Current Mode PWM Controller

Product Status: Mass Production

OVERVIEW

The ISL6721A is a low power, single-ended pulse width modulating (PWM) current mode controller designed for a wide range of DC/DC conversion applications including boost, flyback, and isolated output configurations. Peak current mode control effectively handles power transients and provides inherent overcurrent protection. Other features include a low power mode where the supply current drops to less than 200µA during overvoltage and overcurrent shutdown faults. It differs from the ISL6721 in that the UVLO and UV thresholds have been modified.

This advanced BiCMOS design features low operating current, adjustable operating frequency up to 1MHz, adjustable soft-start, and a bidirectional SYNC signal that allows the oscillator to be locked to an external clock for noise sensitive applications.

KEY FEATURES

  • 1A MOSFET Gate Driver
  • 100µA Startup Current
  • Fast Transient Response with Peak Current Mode Control
  • Adjustable Switching Frequency up to 1MHz
  • Bidirectional Synchronization
  • Low Power Disable Mode
  • Delayed Restart from OV and OC Shutdown Faults
  • Adjustable Slope Compensation
  • Adjustable Soft-start
  • Adjustable Overcurrent Shutdown Delay
  • Adjustable UV and OV Monitors
  • Leading Edge Blanking
  • Integrated Thermal Shutdown
  • 1% Tolerance Voltage Reference
  • Pb-Free (RoHS Compliant)

BLOCK DIAGRAM

 Block Diagram

PARAMETRICS

Parameters
ISL6721A
Basic Information
生产状态
Mass Production
拓扑
Single-Ended
拓扑特征
Flyback or Forward (two switch)
控制模式
Peak Current Mode
UVLO上升 (V)
6.8
UVLO下降 (V)
6.2
VBIAS (最大值) (V)
20
无负载工作电流
4.5 mA
PWM输出数量
1
FET驱动器输出电流最大值
1 A
最大占空比 (%)
100
资质级别
Standard
CAN 采样
YES
温度范围
-40 to +105

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